20613580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79283}}^1$

素因数の和:79305

約数の個数: 24

約数和(自身を含む): 46618992

約数和(自身を除く): 26005412

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 79283, 158566, 317132, 396415, 792830, 1030679, 1585660, 2061358, 4122716, 5153395, 10306790, 20613580]

約数ペア:

[(1, 20613580), (2, 10306790), (4, 5153395), (5, 4122716), (10, 2061358), (13, 1585660), (20, 1030679), (26, 792830), (52, 396415), (65, 317132), (130, 158566), (260, 79283)]